Step 13: The critical twist
For stars that have the same handedness as the one showed in the pictures, The tip of the strip should now be rotated three quarters of a turn counter clockwise. The axis of rotation is orthogonal to the base knot plane.
Or, inspired by the loop-the-loop terminology, after the stunt aircraft has made its loop-the-loop, it should stop dead, turn into a helicopter, then turn 270 degrees to the left.
Hopefully, the many pictures taken from different angles will help you stay on track.